as these transistors generate significant heat during operation. emitter resistors to provide thermal stability. Feedback Loop A resistor (typically ) connects the output back to the input stage.
This design typically follows a push-pull architecture. It uses two 2N3055 transistors as the final power stage to drive an 8-ohm speaker. Key Components Power Transistors: 2x 2N3055 (NPN) Driver Transistors: BD139 (NPN) and BD140 (PNP) Voltage: Dual rail supply ( ±35Vplus or minus 35 cap V Power Output: ~50 Watts into 8 Ohms Step-by-Step Connection Logic Input Stage The audio signal enters through a electrolytic coupling capacitor. 2n3055 Audio Amp Schematic
The collectors of the 2N3055s are connected to the positive and negative power rails. This design typically follows a push-pull architecture
This stabilizes the gain and reduces total harmonic distortion (THD). Safety & Build Tips The collectors of the 2N3055s are connected to